A method for deep adsorption desulfurization of oil products

An oil and adsorbent technology, applied in chemical instruments and methods, refining hydrocarbon oil, treating hydrocarbon oil, etc., can solve the problems of unstable organic framework, low sulfur removal rate, long adsorption time, etc. Low mass diffusion efficiency, enhanced mass transfer diffusion performance, and the effect of increasing active sites

Active Publication Date: 2021-05-28
泰州九润环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned adsorbents all have their own defects, such as Cu / AC, Cu / SiO 2 The removal rate of sulfur is not high and the adsorption time is long; Cu-SBA-15 has mesoporous channels that are conducive to the liquid phase diffusion of thiophene sulfides, but the active sites are not uniformly dispersed and easily lost; Cu-BTC as a metal A member of the organic framework (MOF) material, it has a very high specific surface area, but its organic framework is extremely unstable, easy to collapse, and relatively expensive

Method used

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  • A method for deep adsorption desulfurization of oil products

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Embodiment 1

[0026] Dissolve P123 in HCl solution with a concentration of 1M, stir to fully dissolve it, and obtain solution (1); dissolve the silicon source shown in formula (I) in ethanol, stir and dissolve it fully, and obtain a silicon source with a concentration of 1M solution; the silicon source solution is added dropwise to the solution (1), and a copper nitrate solution with a concentration of 0.05M is added, so that the molar ratio of the silicon source, soft template agent, and metallic copper in the solution system is 3:0.8:1, Continue to stir for 8 hours; transfer the obtained mixture into a stainless steel reaction kettle with polytetrafluoroethylene, react at 100°C for 24 hours, naturally cool to room temperature after the reaction, filter, and use ethanol to remove the soft template agent in the filtered product Reflux extraction, the Cu / mesoporous organosilica nanotube desulfurization adsorbent of this example was obtained, wherein Cu accounted for 6.4 wt% of the mass of the...

Embodiment 2

[0028] Dissolve P123 in HCl solution with a concentration of 1.5M, stir to fully dissolve it, and obtain solution (1); Silicon source solution; Add the silicon source solution dropwise to the solution (1), and add a copper nitrate solution with a concentration of 0.05M, so that the molar ratio of the silicon source, soft template agent, and metallic copper in the solution system is 3:0.8: 0.5, continue to stir for 8 hours; transfer the resulting mixture into a stainless steel reactor with polytetrafluoroethylene, react at 110°C for 20 hours, naturally cool to room temperature after the reaction, filter, and use ethanol to filter the soft template in the filtered product reflux extraction to obtain the Cu / mesoporous organosilica nanotube desulfurization adsorbent of this embodiment, wherein Cu accounts for 4.2 wt% of the mass of the adsorbent, which is marked as number S-2.

Embodiment 3

[0030] Dissolve P123 in HCl solution with a concentration of 1.5M, stir to fully dissolve it, and obtain solution (1); Silicon source solution; Add the silicon source solution dropwise to the solution (1), and add a silver nitrate solution with a concentration of 0.03M, so that the molar ratio of the silicon source, soft template agent, and silver metal in the solution system is 3:0.8: 0.8, continue to stir for 8 hours; transfer the resulting mixture into a stainless steel reactor with polytetrafluoroethylene, react at 100°C for 30 hours, naturally cool to room temperature after the reaction, filter, and use ethanol to filter the soft template in the filtered product The Ag / mesoporous organosilica nanotube desulfurization adsorbent of this embodiment was obtained by reflux extraction, wherein Ag accounted for 5.9 wt% of the mass of the adsorbent, which was recorded as number S-3.

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Abstract

The invention relates to a method for deep adsorption and desulfurization of oil products by using metal / mesoporous organic silicon oxide nanotubes, which belongs to the technical field of oil product refining and adsorption separation. In the present invention, the organic silicon source containing bipyridyl groups is hydrolyzed and polycondensed under the guidance of P123, and the metal through copper or silver is loaded on the surface of the nanotube and the inner wall of the tube by in-situ coordination loading, so as to obtain a metal / intermediate A porous organosilica nanotube desulfurization adsorbent is used for deep adsorption and removal of thiophene sulfides in oil products. The adsorbent of the invention overcomes the technical defects of low mass transfer diffusion efficiency, poor metal dispersion, easy falling off and high price of traditional adsorbents, and has simple preparation process and low cost. When carrying out adsorption desulfurization, the equilibrium adsorption capacity of the adsorbent of the present invention to thiophene sulfides is significantly higher than Cu-SBA-15, and Cu / mesoporous organic silicon oxide nanotubes are also 8%-24% higher than Cu-BTC, It has a good application prospect.

Description

technical field [0001] The invention relates to a method for deep adsorption and desulfurization of oil products by using metal / mesoporous organic silicon oxide nanotubes, and belongs to the technical field of oil product refining and adsorption separation. Background technique [0002] The non-sulfurization of fuel oil such as gasoline and diesel oil is the development trend of the world today, and the removal of sulfur compounds in fuel oil is a major problem in the world today. Traditional hydrodesulfurization can effectively remove most of the simple organic sulfur compounds in gasoline, diesel and other fuel oils, such as ethanethiol, sulfide, disulfide, etc.; but for some complex sulfur compounds, such as Thiophene, benzothiophene, dibenzothiophene and its derivatives, such as 4-methyldibenzothiophene (4-MDBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT) in octane It is difficult to effectively remove the alkane without loss, so that the purpose of deep desulfurization c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G25/00B01J20/22B01J20/28B01J20/30
CPCB01J20/223B01J20/28007B01J20/3057C10G25/003C10G2300/202
Inventor 朱轶宁仲超徐卿
Owner 泰州九润环保科技有限公司
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